Email links should support https
Any time I get an email from KTOMG all the links (most notably the link back to the game's page) are in the form of <a rel="nofollow noreferrer" href="http://url211.keeptrackofmygames.com/wf/click?upn">http://url211.keeptrackofmygames.com/wf/click?upn</a>=<giant-payload>
. I understand the desire to track email clicks, that's fine, but the rest of keeptrackofmygames.com supports https, the tracking urls through url211.keeptrackofmygames.com should support it as well.
I have my browsers set up to explicitly block unencrypted requests, so it's frustrating that every aspect of your website works under that restriction except links in notification emails.

Thanks for notifying me, this must be a configuration set by my email provider so I’ll look into fixing it!